I attached the objective function file.
Values of NaN or Inf are included in the finite-difference derivatives at the initial point. I cannot continue to calculate with fmincon.
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Hello, I 'm working on the nonlinear programmming with constraints.
>> load('JIRIOT_is3.mat')
>> options = optimoptions(@fmincon, 'Display','iter','Algorithm','interior-point');
>> [x,fval,exitflag,output,lambda] = fmincon(@(x)mindistance_xo(x,x0),x0,A,b,Aeq,beq,lb,[],[],options)
But, matlab replied the error message as follows:
>>Value of NaN or Inf is included in the finite-difference derivatives at the initial point.
I enclosed the data file('JIRIOT_is3.mat') and objective function file(mindistance_xo.m).
Could you please give some advices to me how to solve the above program?
Accepted Answer
Alan Weiss
on 28 Jan 2014
Thank you for providing the error message:
Value of NaN or Inf is included in the finite-difference derivatives at the initial point.
This tells you exactly why fmincon cannot continue. You have a few choices:
- Try different initial points, to attempt to find one where the estimated derivative at the initial point exists and is finite
- Examine your objective and nonlinear constraint functions carefully to see why they are returning NaN or Inf
Good luck,
Alan Weiss
MATLAB mathematical toolbox documentation
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